Philips (Now NXP) TDA4555, TDA4556 Schematic [ru]
INTEGRATED CIRCUITS
DATA SH EET
TDA4555
TDA4556
Multistandard decoder
Product specification
File under Integrated Circuits, IC02
November 1984
Philips Semiconductors Product specification
Multistandard decoder
GENERAL DESCRIPTION
The TDA4555 and TDA4556 are monolithic integrated
multistandard colour decoders for the PAL, SECAM,
NTSC 3,58 MHz and NTSC 4,43 MHz standards. The
difference between the TDA4555 and TDA4556 is the
polarity of the colour difference output signals (B-Y)
and (R-Y).
Features
Chrominance part
• Gain controlled chrominance amplifier for PAL, SECAM
and NTSC
• ACC rectifier circuits (PAL/NTSC, SECAM)
• Burst blanking (PAL) in front of 64 µs glass delay line
• Chrominance output stage for driving the 64 µs glass
delay line (PAL, SECAM)
• Limiter stages for direct and delayed SECAM signal
• SECAM permutator
Demodulator part
• Flyback blanking incorporated in the two synchronous
demodulators (PAL, NTSC)
• PAL switch
• Internal PAL matrix
TDA4555
TDA4556
• Two quadrature demodulators with external reference
tuned circuits (SECAM)
• Internal filtering of residual carrier
• De-emphasis (SECAM)
• Insertion of reference voltages as achromatic value
(SECAM) in the (B-Y) and (R-Y) colour difference output
stages (blanking)
Identification part
• Automatic standard recognition by sequential inquiry
• Delay for colour-on and scanning-on
• Reliable SECAM identification by PAL priority circuit
• Forced switch-on of a standard
• Four switching voltages for chrominance filters, traps
and crystals
• Two identification circuits for PAL/SECAM (H/2) and
NTSC
• PAL/SECAM flip-flop
• SECAM identification mode switch (horizontal, vertical
or combined horizontal and vertical)
• Crystal oscillator with divider stages and PLL circuitry
(PAL, NTSC) for double colour subcarrier frequency
• HUE control (NTSC)
• Service switch
QUICK REFERENCE DATA
Supply voltage (pin 13) V
Supply current (pin 13) I
Chrominance input signal (peak-to-peak) V
Chrominance output signal (peak-to-peak) V
Colour difference output signals (peak-to-peak values)
TDA4555: −(R-Y); TDA4556: + (R-Y) V
TDA4555: −(B-Y); TDA4556: + (B-Y) V
Sandcastle pulse; required amplitude for
vertical and horizontal pulse separation V
horizontal pulse separation V
burst gating V
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT 117-1; 1996 November 27.
November 1984 2
= V
P
= I
P
15-9(p-p)
12-9(p-p)
1-9(p-p)
3-9(p-p)
24-9
24-9
24-9
typ. 12 V
13-9
13
typ. 65 mA
20 to 200 mV
typ. 1,6 V
typ. 1,05 V ± 2dB
typ. 1,33 V ± 2dB
typ. 2,5 V
typ. 4,5 V
typ. 7,7 V
Philips Semiconductors Product specification
Multistandard decoder
TDA4555
TDA4556
November 1984 3
Fig.1 Block diagram.
(1) TDA4555: -(R-Y); TDA4556: + (R-Y)
(2) TDA4555: -(B-Y); TDA4556: + (B-Y)
Philips Semiconductors Product specification
Multistandard decoder
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 13) V
Voltage range at pins 10, 11, 17, 23, 24, 25, 26, 27,
28 to pin 9 (ground) V
Current at pin 12 I
Peak value I
Total power dissipation P
Storage temperature range T
Operating ambient temperature range T
P
n-9
12
12M
tot
stg
amb
= V
13-9
TDA4555
TDA4556
max. 13,2 V
0 to V
P
max. 8 mA
max. 15 mA
max. 1,4 W
−25 to + 150 °C
0 to + 70 °C
V
November 1984 4
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